ImportError: DLL load failed while importing blspy about pyinstaller-hooks-contrib

[rokm]

The blspy.cp38-win_amd64.pyd extension is linked against mpir.dll, which (being a link-time dependency) is properly picked up by PyInstaller. However, mpir.dll dynamically loads (at runtime) one of those mpir_*.dll libraries, depending on the CPU on which the program is running. As these are run-time dependencies, PyInstaller does not pick them up, and you get the error due to missing DLL. So you'll need to ensure that they are collected or manually copy them (all of them, unless you are targeting specific CPU).

[andy1994220]

The blspy.cp38-win_amd64.pyd extension is linked against mpir.dll, which (being a link-time dependency) is properly picked up by PyInstaller. However, mpir.dll dynamically loads (at runtime) one of those mpir_*.dll libraries, depending on the CPU on which the program is running. As these are run-time dependencies, PyInstaller does not pick them up, and you get the error due to missing DLL. So you'll need to ensure that they are collected or manually copy them (all of them, unless you are targeting specific CPU).

Where should I copy them manually? I tried copying it in the same directory as main.py, but it didn't work. Or does it need to be added to the .spec? thanks very much.

I got it. I copied mpir*.dll to the same directory of main.py, and added these dlls in the datas of .spec. Compile and run successfully. thanks for your help